Chapter 13(II): Homework5 ADAPTED. The owner of Showtime Movie Theaters, Inc. would like to estimateweekly gross revenue as a function of advertising expenditures. Historical data for asample of eight weeks follow.WeeklyGrossRevenueTelevisionAdvertisingNewspaperAdvertisingRadioAdvertising($1000s)9690959295949494($1000s)5242.533.52.53($1000s)1.521.52.53.32.34.22.5($1000s)0.30.20.30.10.40.40.30.3a) Develop an estimated regression equation in Excel with the amount of televisionadvertising as the independent variableb) Develop an estimated regression equation in Excel with both televisionadvertising and newspaper advertising as the independent variablesc) Develop an estimated regression equation in Excel with all three independentvariables: television advertising, newspaper advertising, and radio advertisingd) Is the estimated regression equation coefficient for television advertisingexpenditures the same in par a), in part b) and in part c)? Interpret the coefficientin each casee) Obtain and compare the multiple coefficient of determination and the adjustedmultiple coefficient of determination for parts a), b) and c). How does thecoefficient of determination changes as a result of adding more independentvariables in the equation?f) What is the estimate of the weekly gross revenue for a week when $3500 is spenton television advertising, $1800 is spent on newspaper advertising, and $350 inradio advertising?g) Use the F test to determine the overall significance of the relationship. What is theconclusion at the .05 level of significance?h) Use the t test to determine the significance of each independent variable. What isyour conclusion at the .05 level of significance?i) Determine the sample correlation coefficient between all possible pairs ofindependent variables to measure multicollinearity. Is there any value highenough to predict any potential problem in the regression model? Explain
Travelling Experience
Can you remember your best experince in another country? Last summer (in 2007), I traveled to the United States for working and spending some time with my friends. I stayed two months in that country. I decided to travel because I wanted to do something different. I was bored about all my daily activities, so […]
